G&S is correct. The WS Easy Finish is comparable to Bona Mega (a single component product that is "easy" on the wallet as well as easy on the installer). WS Easy Finish is NOT comparable to Bona Traffic (which is a 2 component product that is tough to use and tough to finance).

I used to sell the Loba products and here is what I know about comparing Bona and Loba.

The Bona Mega (one component product) is comparable to Loba WS EasyFinish (one component product). Both are entry level products with entry level price tags.

Bona Traffic (2 component; not the HD) is comparable to the Loba WS 2K Supra (two component). These are both mid-range products (from both companies).

Bona Traffic HD (high-end 2 component) is comparable to Loba 2K Supra AT (high-end 2 component product). These are both TOP OF THE LINE for both companies. These are the big boys with the MASSIVE price tags.

I'm going to make a professional "guess" here and say the refinisher heard "Bona" and not the Traffic part. In his mind he was comparing "1 component" product with "1 component product". Bona vs. Loba. What s/he missed was the TRAFFIC part. He went with entry level (still MUCH better than everyone else's entry level) not mid-range. And yes, even these entry level products can add $1/sf onto to the price. The mid-range would have added $1.50/sf and the top range could add $2-$3/sf (yes...they are that expensive).

Because you have Loba already (and you feel there are only 2 coats), I would HIGHLY recommend looking at moving up the ladder and adding a coat of Loba WS 2K Supra (I would also recommend the WS EasyPrime as the primer to ensure a good bond) or if you want better scratch resistance then go ahead and insist on the BIG BOY = Loba 2K Supra AT (ceramic infused polyurethane that is quite tough...but the toughness occurs after 2 coats not just one). The 2K Supra AT is expensive...so please be aware of the financial upgrade on this one.

The staining (water/urine soaking into the wood) is not unheard of. Polyurethane is water RESISTANT not water proof. It slows down the penetration of liquids but does not stop it completely. Even with proper coverage and 3 coats of finish, we would still expect long-standing urine (1 hour or more) to stain the wood below.

I agree that the coverage could be too thin or that only two coats were applied. If the refinisher is from a professional flooring company, I would give the company a call and have someone come out to investigate the floors.

If this was a 'guy' who is a stand-alone refinisher, then you may not want to continue with him as you feel like you have been cheated. After 1.5 years, there would be no form of labour warranty left (normally it is 1 year labour warranty....but I could be wrong).

Anyone who deals with Loba or Bona can have these floors recoated with the SAME COMPANY'S product (Bona over Bona; Loba over Loba). We would call it a buff and coat.